In the struggle for survival, the fittest win out at the ____ of their rivals because they succeed in adapting themselves best ____ their environment.

I never leave any electrical appliances on standby and I think it is a good way to ____ energy in the home.

It turned out to be a ______  journey when the weather became bad.

Choose the best answer: Information technology has ____ our lives.

In the last quarter of this year, our entertainment company had a big success in signing a lot of contracts with celebrities.

Choose the best answer:

My wife is going on her business next week so I have to ____ most of the chores around the house.

The rate of urbanization is low, ____ the rate of urban growth is high.

Viết lại câu sau dưới dạng câu chẻ bị động: The pedestrian asked the policeman a lot of questions.